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Chemical Datasheet

AMMONIUM MOLYBDATE

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 12027-67-7
 none data unavailable
  • AMB
NIOSH Pocket Guide International Chem Safety Card
Molybdenum (soluble compounds, as Mo) none
NFPA 704
data unavailable
General Description
White to greenish-yellow solid. Sinks and mixes with water. (USCG, 1999)

Hazards

Reactivity Alerts
none
Air & Water Reactions
Water soluble.
Fire Hazard
Special Hazards of Combustion Products: Toxic oxides of nitrogen may form in fire. (USCG, 1999)
Health Hazard
Inhalation causes irritation of nose and throat. Contact with eyes causes irritation. (USCG, 1999)
Reactivity Profile
Acidic salts, such as AMMONIUM MOLYBDATE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

Response Recommendations

Isolation and Evacuation
No information available.
Firefighting
No information available.
Non-Fire Response
No information available.
Protective Clothing
Dust mask; goggles or face shield; rubber gloves (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
INHALATION: move to fresh air.

EYES: flush with water for at least 15 min. (USCG, 1999)

Physical Properties

Chemical Formula:
  • H24Mo7N6O24
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 1.4 at 68°F 2.398 (USCG, 1999) - Denser than water; will sink
Boiling Point: data unavailable
Molecular Weight: 123.6 (USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: 1000 mg Mo/m3 (NIOSH, 2023)

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Molybdic acid, hexaammonium salt; (Ammonium heptamolybdate) (12027-67-7) 2.6 mg/m3 230 mg/m3 1400 mg/m3
(DOE, 2018)

Regulatory Information

EPA Consolidated List of Lists

No regulatory information available.

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

Alternate Chemical Names